Continuous variation is usually controlled by

  1. codominant alleles only
  2. the environment only
  3. many genes with small additive effects plus the environment
  4. one gene with two alleles
Answer

C) many genes with small additive effects plus the environment

Polygenes and environment. AS & A Level Biology · Topic 17 Selection and Evolution · 17.1 Variation

Biology MCQ · More A Level Biology: Selection and evolution MCQs · Practise